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ECM reprogramming by dealer

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Hi I have a 2018 Canyon diesel that I brought to the dealer with engine light on, got charged $158 to scan and reprogram my ECM. My usual dealer told me that never had to do that and I'm wandering if I got scammed? When I ask why it was needed they told me that there was a corrupt file? I then pointed out that only GM put files in my truck but they insisted that I pay anyway? Can anybody shed some light?

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I should say.. many dealers charge a diagnostic fee for pulling the code. You didn’t mention that.


I bought a hand held code puller and it can reset the error codes, so you can clear it if it makes sense. I’d clear loose gas cap and other non-problem codes.



Sent from my iPhone using Tapatalk


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